The correct answer is B. On squaring the given relation or Now Thus, the given result will hold true only when and not for all real values of x.

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Maths Trigonometrical Ratios, Functions and Identities Trigonometrical Ratios of Sum and Difference of Two and Three Angles Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

If then for

All real x

None of these

Text Solution

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The correct answer is:

On squaring the given relation

Now

Thus, the given result will hold true only when and not for all real values of x.

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